A method performed by a first node for adjusting channel coefficients of a wireless channel between the first node and a second node in a wireless communications network is provided. The first node obtains a calculated current correlation value between the first channel coefficients estimated in a first time instant, and the second channel coefficients estimated in a second time instant. The second time instant is subsequent to the first time instant. The first node obtains a previous correlation value calculated at a previous time instant. The first node determines a phase adjustment value based on an estimated phase difference to be applied to the estimated second channel coefficients associated with the wireless channel. The phase difference is estimated between the current correlation value and the previous correlation value.

Systems and methods for Wi-Fi sensing are provided. A method for Wi-Fi sensing carried out by a sensing device including a processor is described. Initially, first channel state information (CSI) of a first transmission channel representing a first sensing measurement performed on a first sensing transmission transmitted from a sensing transmitter to a sensing receiver in the first transmission channel may be received. A time-domain channel representation (TD-CRI) of the first CSI may be calculated by transforming the first CSI into the time domain. Then, a plurality of estimated channel responses corresponding to a plurality of transmission channels may be generated according to the TD-CRI. One or more preferred transmission channels from among the plurality of transmission channels may be determined according to the plurality of estimated channel responses.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may communicate a signal using a first duplexing mode in accordance with a sub-band full-duplex (SBFD) capability of the UE. The UE may perform one or more measurements on the signal to obtain a channel impulse response (CIR) associated with communication of the signal. The UE may transmit a message that includes information indicative of an update pertaining to the SBFD capability of the UE. The update may be based on the channel impulse response and may identify a second duplexing mode for wireless communication by the UE.

Disclosed is a method and a first transceiver of a wireless communication network, for handling reference signals. The method comprises receiving, from a second transceiver, at antenna elements of each of M antenna branches of the first transceiver and in time domain, an OFDM modulated wideband reference signal comprising an OFDM reference signal symbol mapped to every K subcarrier frequency of at least a subset of a carrier frequency bandwidth, and, at each of the M antenna branches, sampling the received wideband reference signal using N samples per OFDM symbol. The method further comprises, for each of the M antenna branches, accumulating the received, sampled wideband reference signal over at least two repetition blocks, each of length of N/K, to obtain a condensed signal with the length N/K samples and conveying the condensed signal over an interface to an aggregate unit.

An example method of ultra-wideband (UWB) sensing performed by a wireless communication device, the method comprising determining a first channel impulse response (CIR) estimation of a first frequency channel based on a radio access technology (RAT) session, wherein the RAT is different from UWB. The method also comprises determining a second CIR estimation of a second frequency channel based on a UWB session and determining a third CIR estimation of the first frequency channel based on determining a phase difference between the third CIR estimation and the first CIR estimation. The method further comprises determining a total CIR estimation for a combined frequency channel comprising the first frequency channel and the second frequency channel based on stitching the first CIR estimation, the second CIR estimation, and the third CIR estimation.

A method for designing a time-domain non-stationary V2V MIMO communication channel emulator includes determining basic parameters for the V2V MIMO communication channel; generating a V2V 2D time-domain non-stationary communication channel environment, by using a MATLAB, that is, the numbers of the scatterers and the positions of the scatterers and the like; importing parameters generated in the previous step into a hardware simulation platform to calculate communication channel parameters for clusters, such as an angle distribution and a power distribution, writing a Verilog code for running, and eventually calculating to obtain a channel impulse response of the time-domain non-stationary V2V MIMO communication channel; and comparing with a statistical characteristic of a theoretical communication channel model, and designing an appropriate hardware diagram of a communication channel emulator. The method supports the simulation of time-domain non-stationary V2V MIMO communication channel, filling the gap in the field of communication channel emulators.

Disclosed is a method comprising receiving, from a user equipment, information indicating at least: one or more channel characteristics of one or more received positioning reference signals of a set of frequency hops, and one or more identifiers of one or more missed positioning reference signals of the set of frequency hops; and compensating for the one or more missed positioning reference signals of the set of frequency hops based at least partly on the information.

Techniques are provided for implementing time reversed reference signals for radio frequency (RF) sensing operations in a communication system. An example method for generating channel reciprocity information for radio frequency sensing operations includes receiving radio frequency sensing information from a sensing node, generating a channel reciprocity prediction based at least in part on the radio frequency sensing information and a channel reciprocity prediction model, and providing an indication for time reversal precoding to the sensing node based on the channel reciprocity prediction.

A system that incorporates the subject disclosure may include, for example, determining an interference based on a channel gain for each signal of a group of signals received at a receiver from a group of transmitters. A determination is made as to whether the interference satisfies a threshold range of an analog-to-digital converter of the receiver for each of the group of transmitters. An analog time domain cancellation is performed responsive to a determination that the interference does not satisfy the threshold range, and a digital time domain cancellation is performed responsive to a determination that the interference satisfies the threshold range. Other embodiments are disclosed.

A system includes one or more ultra-wideband (UWB) transmit apparatuses configured to communicate an UWB signal that encodes radio packets that includes at least a preamble and a start frame delimiter (SFD) enabling a receiver to recover a reception timestamp and a channel impulse response (CIR) of the transmission, wherein the one or more UWB transmit apparatuses are located in a fixed position and configured to divide a space into a plurality of subspaces configured to be assigned an attribute associated with the subspaces, including one or more UWB receivers configured to extract CIR information from the one or more radio packets received from a UWB transceiver, and trigger an event in response to a determination of the receiver being either located in one of a plurality of subspaces, or leaving or entering the one of the plurality of subspaces, wherein the determination is made utilizing at least the CIR information.